CN103850998A - Pressure stop device with opening and closing controlled by electromagnetic valve - Google Patents
Pressure stop device with opening and closing controlled by electromagnetic valve Download PDFInfo
- Publication number
- CN103850998A CN103850998A CN201210493553.6A CN201210493553A CN103850998A CN 103850998 A CN103850998 A CN 103850998A CN 201210493553 A CN201210493553 A CN 201210493553A CN 103850998 A CN103850998 A CN 103850998A
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- housing
- oil
- electromagnetic valve
- piston
- closed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention discloses a pressure stop device with the opening and closing controlled by an electromagnetic valve. The pressure stop device comprises a housing, a piston, a cover plate and the electromagnetic valve. The cover plate is arranged at the top opening of the housing and used for sealing the housing; the electromagnetic valve is mounted on the housing or the cover plate and used for controlling on and off of hydraulic oil; the piston is mounted inside the housing and divides the housing into a pressure oil cavity, an oil outlet cavity, an oil return cavity and a control oil cavity; the housings of the control oil cavity and the oil return cavity are respectively provided with a control oil port and a buffer oil port, the control oil port of the housing of the control oil cavity is arranged above the corresponding buffer oil port, the control oil port of the housing of the oil return cavity is arranged under the corresponding buffer oil port, the insides of the control oil ports and the buffer oil ports are provided with throttle holes, and the diameter of the throttle holes inside the control oil ports is larger than that of the throttle holes inside the buffer oil ports. The pressure stop device with the opening and closing controlled by the electromagnetic valve has the advantages of no impact, no noise, low pressure losses, compact integral size, external indicating and alarming and the like and is applicable to a speed regulating system.
Description
Technical field
The present invention relates to Water-turbine Generator Velocity Modulation System technical field, relate in particular to a kind of pressure stopper.
Background technique
Water-turbine Generator Velocity Modulation System is mainly made up of speed regulator, oil gear; oil gear is mainly made up of oil sump tank and pressure oil tank two-part; pressure oil tank provides stable pressure oil-source to speed control system, in, in large-scale unit, conventionally can adopt pressure stopper to realize the switching function of pressure oil tank and speed control system hydraulic part.Pressure stopper often adopts cartridge valve to realize the through-flow of large flow, and cartridge valve is made up of lining and piston two-part, and its switch is by poor realization of the upper and lower cavity pressure of piston.Because cartridge valve is made up of two-part, in the time that latus rectum is larger, physical dimension is larger, so the area of control chamber is larger, under the effect of pressure oil, the power on piston of acting on while closing is also larger, piston movement speed is fast, therefore large to the impact force of lining and cover plate, noise is large; Piston top adopts spring to increase the pressure difference while closing, and while causing unlatching, pressure oil must overcome the effect of spring force, larger by the pressure loss of pressure stopper; And existing pressure stopper does not possess outside indication, warning function.
Summary of the invention
For above-mentioned prior art, the technical problem to be solved in the present invention is: existing pressure stopper exists that impact force is large, noise is large, the pressure loss seriously and not possesses outside indication, warning function.
In order to solve the problems of the technologies described above, the present invention adopts following technological scheme:
The pressure stopper being opened and closed by electromagnetic valve, is characterized in that, comprises housing, piston, cover plate, solenoid valve; Described cover plate is arranged on housing upper opening place for closed shell, and solenoid valve is arranged on housing or on cover plate for controlling the switching of hydraulic oil; Described Piston assembling is divided into housing pressure oil cavity, goes out oil pocket, oil back chamber, control oil pocket in housing, on the housing of controlling oil pocket and oil back chamber, be equipped with control port and buffering hydraulic fluid port, the control port of controlling on oil pocket housing is positioned at buffering hydraulic fluid port top, control port on oil back chamber housing is positioned at buffering hydraulic fluid port below, in described control port and buffering hydraulic fluid port, be equipped with throttle orifice, the throttle orifice latus rectum in control port is greater than the throttle orifice latus rectum in buffering hydraulic fluid port.
As a further improvement on the present invention, be provided with a push rod on described piston, the top of this push rod is through cover plate.
The underpart of described push rod is spherical structure, and is fixed on piston by flange.
Visual indicative mark is also housed on described cover plate, can directly observes by this visual indicative mark at the scene the on off state of pressure stopper.
As a further improvement on the present invention, described cover plate is provided with to monitor the approach switch of piston position, sends like this feedback signal after piston action, can effectively guarantee the action of pressure stopper accurately.
As a further improvement on the present invention, described piston is differential piston, all has balancing slit in the side, upper and lower of this differential piston, when guaranteeing piston movement and the concentricity of housing, reduces friction and wear, makes piston action flexible.
Being a conical surface in described differential piston lower tip, is a linear sealing form with the conical surface in housing after contacting.
As a further improvement on the present invention, described solenoid valve is provided with to monitor the approach switch of valve core of the electromagnetic valve position, sends feedback signal like this after solenoid valve action, can effectively guarantee the action of pressure stopper accurately.
Described solenoid valve is the solenoid valve of Single electromagnet or the solenoid valve for double electromagnet.
Working principle of the present invention is: opening direction: control port is located at cover plate bottom, and buffering hydraulic fluid port is located on the spacing seam neutral position of cover plate.In the time that piston is opened, the oil on piston top can be discharged by two hydraulic fluid ports simultaneously, and the opening speed of piston is adjusted by the throttle orifice size in control port; In the time that piston approaches fully open position, piston seals control port, the oil on piston top can only be discharged by buffering hydraulic fluid port, damping throttle orifice is less, therefore the opening speed of piston can reduce greatly, to prevent the too fast impact to cover plate of opening speed, the effect of buffering can regulate by the size of adjusting damping throttle orifice.Closing direction: buffering hydraulic fluid port is in oil back chamber bottom, and control port is on top; Operating principle is identical with adjustment mode and opening direction.
Compared with prior art, the present invention has following beneficial effect:
One,, because mounting type is variable, can adapt to the needs of multiple installation, Placement; Due to simple in structure, only need change piston and the internal diameter of housing just can be designed to the series product of different latus rectums.
Two, because lining and piston unite two into one, overall dimensions is compared cartridge valve and can be greatly reduced, and has saved material, processing charges, has reduced Whole Equipment weight and needed installing space.
Four, owing to having adopted classification Cushioning Design, the stable action of whole device is adjustable, without impact, noise free, has reduced the possibility of impacting the seal failure causing, the working life of extension device.
Five, close spring owing to having cancelled, in the time opening, less by the pressure loss of valve group.
Six, control solenoid valve with position switch; approach switch is equipped with on device top; switching signal can be put into opening, shut down in flow process of hydraulic generator unit; guaranteeing can be because of the pressure stopper action fault that causes not in place in start process; also guarantee to shut down reliably blocking of rear pressure oil, guarantee the safety of unit.
Seven, device top, with the indication of open and close terrain, when unit is overhauled, can be confirmed the state of pressure stopper by terrain, and can take measures to guarantee that pressure stopper is in complete shut-down position.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Reference character is: 1 is that cover plate, 2 is that housing, 3 is that differential piston, 4 is that control mouth, 5 is that buffer mouth 6 is that oil outlet, 7 is that oil back chamber, 8 is push rod.
Embodiment
Below in conjunction with the drawings and the specific embodiments, the invention will be further described.
The pressure stopper being opened and closed by electromagnetic valve, comprises housing, piston, cover plate, solenoid valve; Described cover plate is arranged on housing upper opening place for closed shell, and solenoid valve is arranged on housing or on cover plate for controlling the switching of hydraulic oil; Described Piston assembling is divided into housing pressure oil cavity, goes out oil pocket, oil back chamber, control oil pocket in housing, on the housing of controlling oil pocket and oil back chamber, be equipped with control port and buffering hydraulic fluid port, the control port of controlling on oil pocket housing is positioned at buffering hydraulic fluid port top, control port on oil back chamber housing is positioned at buffering hydraulic fluid port below, in described control port and buffering hydraulic fluid port, be equipped with throttle orifice, the throttle orifice latus rectum in control port is greater than the throttle orifice latus rectum in buffering hydraulic fluid port.Pressure oil enters control chamber, and because piston is differential piston, control chamber sectional area is greater than the sectional area of pressure oil cavity, and piston moves downward, and realizes closing of pressure stopper; When the logical oil return of oil back chamber, piston is opened under the effect of back oil cavity pressure and pressure oil cavity.
Described housing bottom connects pressure oil tank, and side is fuel-displaced.In order to meet dullness, two tune and to be multiple oil circuit fuel feeding such as overspeed limiting and emergency distributing valve, multiple oil outlets can be established in side.Bottom can be connected by flange, also can be designed to board-like Placement, to meet the needs of multiple installation, Placement.
Differential piston lower tip is a conical surface, is a linear sealing form with the conical surface in housing after contacting, and can effectively guarantee like this reliability of sealing.Occur after possible wearing and tearing at piston, housing, can automatically revise and still guarantee be a linear sealing form, so increased the working life of equipment.
Claims (9)
1. the pressure stopper being opened and closed by electromagnetic valve, is characterized in that, comprises housing, piston, cover plate, solenoid valve; Described cover plate is arranged on housing upper opening place for closed shell, and solenoid valve is arranged on housing or on cover plate for controlling the switching of hydraulic oil; Described Piston assembling is divided into housing pressure oil cavity, goes out oil pocket, oil back chamber, control oil pocket in housing, on the housing of controlling oil pocket and oil back chamber, be equipped with control port and buffering hydraulic fluid port, the control port of controlling on oil pocket housing is positioned at buffering hydraulic fluid port top, control port on oil back chamber housing is positioned at buffering hydraulic fluid port below, in described control port and buffering hydraulic fluid port, be equipped with throttle orifice, the throttle orifice latus rectum in control port is greater than the throttle orifice latus rectum in buffering hydraulic fluid port.
2. the pressure stopper being opened and closed by electromagnetic valve according to claim 1, is characterized in that, is provided with a push rod on described piston, and the top of this push rod is through cover plate.
3. the pressure stopper being opened and closed by electromagnetic valve according to claim 2, the underpart of described push rod is spherical structure, and is fixed on piston by flange.
4. the pressure stopper being opened and closed by electromagnetic valve according to claim 1, is characterized in that, visual indicative mark is also housed on described cover plate.
5. the pressure stopper being opened and closed by electromagnetic valve according to claim 1, is characterized in that, is also equipped with to monitor the approach switch of piston position on described cover plate.
6. the pressure stopper being opened and closed by electromagnetic valve according to claim 1, is characterized in that, described piston is differential piston, all has balancing slit in the side, upper and lower of this differential piston.
7. the pressure stopper being opened and closed by electromagnetic valve according to claim 6, is characterized in that, is a conical surface in described differential piston lower tip, is a linear sealing form with the conical surface in housing after contacting.
8. the pressure stopper being opened and closed by electromagnetic valve according to claim 1, is characterized in that, described solenoid valve is provided with to monitor the approach switch of valve core of the electromagnetic valve position.
9. the pressure stopper being opened and closed by electromagnetic valve according to claim 7, is characterized in that, the solenoid valve that described solenoid valve is Single electromagnet or the solenoid valve for double electromagnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210493553.6A CN103850998B (en) | 2012-11-28 | 2012-11-28 | A kind of pressure stopper by electromagnetic valve opening and closing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210493553.6A CN103850998B (en) | 2012-11-28 | 2012-11-28 | A kind of pressure stopper by electromagnetic valve opening and closing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103850998A true CN103850998A (en) | 2014-06-11 |
| CN103850998B CN103850998B (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210493553.6A Active CN103850998B (en) | 2012-11-28 | 2012-11-28 | A kind of pressure stopper by electromagnetic valve opening and closing |
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| CN (1) | CN103850998B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107023704A (en) * | 2016-02-01 | 2017-08-08 | 罗伯特·博世有限公司 | Valve cylinder for the valve armature of magnetic valve and for magnetic valve |
| CN110094244A (en) * | 2019-05-13 | 2019-08-06 | 哈尔滨工程大学 | The electro-hydraulic full variable gas distribution actuator of one kind and its control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1290820A (en) * | 1999-10-01 | 2001-04-11 | 速睦喜股份有限公司 | Linear driver with air buffer machanism |
| DE20106764U1 (en) * | 2001-04-19 | 2001-07-19 | Schlutz Heinz | Mining cylinder with coating |
| DE20106761U1 (en) * | 2001-04-19 | 2001-07-19 | Schlutz Heinz | Hydraulic cylinder with end position damping |
| CN201209679Y (en) * | 2008-04-18 | 2009-03-18 | 山东泰丰液压设备有限公司 | Proportional guide servo control fully-active throttle cartridge valve |
| CN101550953A (en) * | 2009-04-30 | 2009-10-07 | 山东泰丰液压设备有限公司 | Large-flow double-active electro-hydraulic proportion cartridge throttle valve system |
-
2012
- 2012-11-28 CN CN201210493553.6A patent/CN103850998B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1290820A (en) * | 1999-10-01 | 2001-04-11 | 速睦喜股份有限公司 | Linear driver with air buffer machanism |
| DE20106764U1 (en) * | 2001-04-19 | 2001-07-19 | Schlutz Heinz | Mining cylinder with coating |
| DE20106761U1 (en) * | 2001-04-19 | 2001-07-19 | Schlutz Heinz | Hydraulic cylinder with end position damping |
| CN201209679Y (en) * | 2008-04-18 | 2009-03-18 | 山东泰丰液压设备有限公司 | Proportional guide servo control fully-active throttle cartridge valve |
| CN101550953A (en) * | 2009-04-30 | 2009-10-07 | 山东泰丰液压设备有限公司 | Large-flow double-active electro-hydraulic proportion cartridge throttle valve system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107023704A (en) * | 2016-02-01 | 2017-08-08 | 罗伯特·博世有限公司 | Valve cylinder for the valve armature of magnetic valve and for magnetic valve |
| CN107023704B (en) * | 2016-02-01 | 2019-07-16 | 罗伯特·博世有限公司 | For the valve armature of solenoid valve and for the valve cylinder of solenoid valve |
| CN110094244A (en) * | 2019-05-13 | 2019-08-06 | 哈尔滨工程大学 | The electro-hydraulic full variable gas distribution actuator of one kind and its control method |
| CN110094244B (en) * | 2019-05-13 | 2021-09-10 | 哈尔滨工程大学 | Electro-hydraulic fully-variable gas distribution actuator and control method thereof |
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| Publication number | Publication date |
|---|---|
| CN103850998B (en) | 2016-03-02 |
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Effective date of registration: 20181122 Address after: 618000 No. 18, Third Section of Lushan South Road, Deyang City, Sichuan Province Co-patentee after: Dongfang Electric Group Dongfang Motor Co., Ltd. Patentee after: Dongfang Electric Automatic Control Engineering Co., Ltd. Address before: 618000 No. 99 Pearl River East Road, Deyang Economic and Technological Development Zone, Sichuan Province Co-patentee before: Dongfang Electric Group Dongfang Motor Co., Ltd. Patentee before: DFEM Control Equipment Co., Ltd. |
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